Window-ventilating device



Sept. 23 1924.

C. V. SWANSON WINDOW VENTILATIG DEVICE Filed June 27 1924 Patented Sept. 23, 1924.

UNITED STATES CHARLES V. SWANSON, OF VELVA, NORTH DAKOTA.

WINDOW-VENTILATING DEVICE.

Application filed June 27, 1924. Serial No. 722,723.

To all whom t may concern: i

Be it known that I, CHARLES V. SwANsoN,

a citizen of the United States, residing at Velva, in the county vof McHenry and State of North Dakota, have invented certain new and useful Improvements in WindowsVentilating Devices, ofwhich the following is a specification.

My invention relates to ventilators and the object is to provide a simple and efficient device adapted to be used particularly in window frames and the use of which will admit freshair into a room without direct draft and rain or dust is kept out. A room thus equipped is always provided with an ample supply of fresh air and the device needs no attention regardless of weather conditions.

In the accompanying drawing:

Fig. 1 is an outside elevation of a portion of a house wall, a window frame and its lower window sash and my device in operative position under the sash.

Fig. 2 is an enlarged sectional elevation as on line 2-2 in Fig. 1.

Fig. 3 is an enlarged section of the center portion of my device as on line 3 3 in Fig.

Fig. 4: is an elevation of my device ready for use and as it appears from the inner side.

Referring to the drawing by reference numerals, 5 represents a portion lof a house wall having a window frame 11 with outside casings 6, inside casings 7, sill 8, the lower window sash 9, two outer sash guiding or so-called parting strips 10 and an inner sash guiding strip 12.

My device comprises an elongated, quadrangular frame adapted to be placed vertically with its lower edge resting on the lintel 8 and its upper edge engaged by the lower part of the window sash, the latter of course being first raised high enough to permit placing of my device and then lowered to rest on the said upper edge, as best shown in Figs. 1 and 2.

The device consists, preferably, of a frame made in two sections 15S-13a hingedly connected at their adjacent edges by a so-cal1ed piano hinge7 or continuous hinge 14 to in sure a tight joint. Each section (13*13?) has a front and rear screen 15F and 15R respectively of which each of the front screens 55 may be secured on the frame by a metal frame as 16 secured with screws 17. The rear screens are secured in like manner with frames 18 and screws 19, these frames (18) differing from the front ones (16) in that their upper edges project as vat 18a above the screen frame serving as a guard to bear against the inner, lower edge of the sash 9 (see Fig. 2). One of the metal frames 18 projects over the meeting vertical edges of the frame sections, as 18b in Figs. 3 and 4:, to form a practically water and dust proof joint at the sideopposite the hinge.

Between the rear and front screens 15R and 15F I secure in each frame an air current defiector comprising a number of vertically spaced, horizontal, fiXed defleotor blades 20, preferably of sheet metal, each blade sloping downwardly and forwardly with its front edge adjacent the front screen. The rear part of each blade is bent upwardly and forwardly from a point adjacent the rear screen ISR to form a smaller extension blade 20a.

The screens 15F 'and 15R are a very fine wire mesh, such that rain drops, sleet and sand etc., cannot get through but circulation of air through it is not prevented but only retarded to some extent. 21 is a handle of any suitable type secured as at 22 one on each upper frame member at its center.

In the application of the device the window sash is first raised, then the operator grasps the handles 21 and inserts the ventilator frame vertically in the space under the sash. The sections may need to be swung some on hinge 141 to shorten the distance from end to end horizontally so that the ends may be inserted between the parting strips 6 and the guides 12 on opposite sides of the window. The device is then straightened out so that its lower part bears against the front edge of the lower strip or ledge 12, the window sash is lowered to contact with and rest on the upper edge of the frame (see Fig. 2) with the flange 18SL bearing against the lower inner surface of the sash frame. Outside air will readily circulate throughI the outer screen thence through the inner screen after passing between the angular blades 20. If there should be a strong wind blo-wing against the device a great deal of its force is broken by the outer screen 15F because of its fine mesh, and after passing through said screen its velocity is further reduced by being delected on the inclined blades. The smaller flanges 2()a will further retard the air currents each such flange deflecting air up wardly toward the lower side of the next higher blade, the latter surface again delecting the current toward the rear screen 15R through which the air enters the room and circulates therein without causing a draft. The arrows A in Fig. 2 indicate the direction of air currents through the de- Viceas above described. Air thus admitted intoa'room mixes with the heated air therein andis admitted in suliicient quantities or volume tokeep the air in the room fresh but Without discomfort to occupants.

My device may be used in all seasons and needs nov attention after it is installed. In places such as hotels where some rooms are locked up for various periods of time the usefulness of my device is quite appa-rent since such rooms may be locked for any length of time but the device willy always insure a plentiful supply of fresh air regardless ot outside atmospheric conditions.

Havingl thus described my invention, what I claim is:

1. A'ventilator comprising a o luadrangulai.l frame adapted to be inserted between a mov able window sash and one end of its frame inavertical plane7 wind retarding mea'ns secured inspaced relation to the inner and outer sides of said: frame, ixed detlectors mounted between said retarding means, said deflectors comprising a series of vertically spaced, horizontally arranged blades, each of said blades comprising a main, outwardly and downwardly sloping blade and an integral outwardly and upwardly inclined blade at the rear of said main blade and means on said ventilator frame for engaging the inner face of the adjacent window sash; said screens removably secured on the ventilator frame, the means for securing the screens comprising a quadrangular metal frame for each screen, said means for engaging the lower inner part of the window sash comprising the upper run of the inner metal frame extended above the top of the ventilator frame.

2. A ventilator frame comprisingr twoquadrangular, horizontally aligned frames hingedly connected, a screen on the outer side of each frame, a screen on the inner side of each frame, a quadrangular metal frame for each screen adapted to hold each screen in place, deflector blades mounted horizontally and intermediate said screens and having each an outwardly and downward-ly sloping part and an upwardly and outwardly inclined part, one of said metal frames on the inner side extended horizontally at the adjacent vertical edges of the hinged frames and adaptedl to cover the vertical joint rearwardly of the hinge for the purpose described.

In testimony whereof I alix my signature.

CHARLES V. SWANSON. 

